Description Reviews K&N's Universal Air Filter RU-1005 is designed and manufactured for a wide variety of applications. Regardless of the angle, offset diameter of the air intake, there is a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16" (1.5mm) to fit in-between sizes. K&N Universal air filters are available in round, tapered (cone style) and oval designs, for just about any special application. This is a replacement filter for the RPM Intake setup as well as possibly others. Part RU-1005 Product Specifications: Part Number: knnRU-1005 Description: Universal Clamp-On Air Filter Air Filter Large End Diameter: 5.875 in (149 mm) Air Filter Material: Cotton Gauze Air Filter Shape: Round Tapered Base Outside Diameter: 5.875 in (149 mm) Filter Material: Cotton Gauze Filter Re-Oiling Amount: 0.79 oz (23 ml) Flange Angle: 0 degrees Flange Inside Diameter: 4.5 in (114 mm) Flange Length: 0.625 in (16 mm) Flange Offset: 0 in (0 mm) Flange Type: Centered Flanges: 1 Frame Design: Flexible Height: 4.5 in (114 mm) Item Type: High Performance Oil Included: Filter Is Pre-Oiled Package Contents: 1 Air Filter Package Material: Corrugated Package Quantity: 1 Package Type: Box Pre-Screened: No Product Style: Round Tapered Universal Air Filter Top Material: Rubber Top Outside Diameter: 4.5 in (114 mm) Top Style: Rubber Warranty: 1 Year Limited Washable: Yes Weight: 1.1 lb (0.5 kg) Flange Angle: 0 Degree Shape: Round Tapered Air Filter Large End Diameter: 5.875 in. (149mm) Automotive Item Grade: High Performance Base Outside Diameter: 5.875 in. (149mm) Flange Inside Diameter: 4.500 in. (114mm) Flange Length: 0.625 in. (16mm) Flange Offset: 0.000 in. (0mm) Item Height: 4.500 in. (114mm) Item Weight: 1.100 lbs. (0.5 kg) Machine Washable: Yes Number of Flanges: 1 Top Outside Diameter: 4.500 in. (114mm) Air Filter Color: Red Need to clean the filter? Use this cleaning kit! ***Please note - this cannot be exported outside of the USA.***